Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study
Oscillation characteristics of Pi 2 magnetic pulsations observed in auroral region have been statistically examined on the basis of the magnetic field data obtained at the conjugate stations, Syowa Station in Antarctica and Husafell, Isafjordur and Tjornes in Iceland. The examination reveals that th...
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Department of Aeronautics and Astronautics, School of Engineering, Tokai University/Department of Aeronautics and Astronautics, School of Engineering, Tokai University/National Institute of Polar Research
1988
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ftnipr:oai:nipr.repo.nii.ac.jp:00004040 2023-05-15T13:49:01+02:00 Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study Tohru Sakurai Yutaka Tonegawa Natsuo Sato 1988-02 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4040 http://id.nii.ac.jp/1291/00004040/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4040&item_no=1&attribute_id=18&file_no=1 en eng Department of Aeronautics and Astronautics, School of Engineering, Tokai University/Department of Aeronautics and Astronautics, School of Engineering, Tokai University/National Institute of Polar Research National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4040 http://id.nii.ac.jp/1291/00004040/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 1, 110-120(1988-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4040&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1988 ftnipr 2023-01-14T19:56:31Z Oscillation characteristics of Pi 2 magnetic pulsations observed in auroral region have been statistically examined on the basis of the magnetic field data obtained at the conjugate stations, Syowa Station in Antarctica and Husafell, Isafjordur and Tjornes in Iceland. The examination reveals that the characteristics are quite different between the H and D components of Pi 2 magnetic pulsations. The pulsations in H component show larger amplitude than in the D component. The orientation of the principal axis, ellipticity and phase relations of Pi 2 oscillations are also statistically investigated. The important characteristics of Pi 2 as hydromagnetic waves (HM waves) generated in the magnetosphere are believed to be exhibited well in the H component. All of the characteristics show that oscillations of Pi 2 in auroral region are found to be resonant oscillations of magnetic field-line. Regarding the conjugacy of Pi 2 oscillations, Syowa and Husafell is also found to be the best conjugate station-pair in comparison with other station-pairs of Syowa-Isafjordur, and Syowa-Tjornes. Report Antarc* Antarctica Iceland National Institute of Polar Research Repository, Japan Syowa Station Husafell ENVELOPE(-20.893,-20.893,64.700,64.700) |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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ftnipr |
language |
English |
description |
Oscillation characteristics of Pi 2 magnetic pulsations observed in auroral region have been statistically examined on the basis of the magnetic field data obtained at the conjugate stations, Syowa Station in Antarctica and Husafell, Isafjordur and Tjornes in Iceland. The examination reveals that the characteristics are quite different between the H and D components of Pi 2 magnetic pulsations. The pulsations in H component show larger amplitude than in the D component. The orientation of the principal axis, ellipticity and phase relations of Pi 2 oscillations are also statistically investigated. The important characteristics of Pi 2 as hydromagnetic waves (HM waves) generated in the magnetosphere are believed to be exhibited well in the H component. All of the characteristics show that oscillations of Pi 2 in auroral region are found to be resonant oscillations of magnetic field-line. Regarding the conjugacy of Pi 2 oscillations, Syowa and Husafell is also found to be the best conjugate station-pair in comparison with other station-pairs of Syowa-Isafjordur, and Syowa-Tjornes. |
format |
Report |
author |
Tohru Sakurai Yutaka Tonegawa Natsuo Sato |
spellingShingle |
Tohru Sakurai Yutaka Tonegawa Natsuo Sato Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
author_facet |
Tohru Sakurai Yutaka Tonegawa Natsuo Sato |
author_sort |
Tohru Sakurai |
title |
Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
title_short |
Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
title_full |
Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
title_fullStr |
Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
title_full_unstemmed |
Oscillation characteristics of Pi 2 in auroral zone: Syowa-Iceland conjugate study |
title_sort |
oscillation characteristics of pi 2 in auroral zone: syowa-iceland conjugate study |
publisher |
Department of Aeronautics and Astronautics, School of Engineering, Tokai University/Department of Aeronautics and Astronautics, School of Engineering, Tokai University/National Institute of Polar Research |
publishDate |
1988 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4040 http://id.nii.ac.jp/1291/00004040/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4040&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-20.893,-20.893,64.700,64.700) |
geographic |
Syowa Station Husafell |
geographic_facet |
Syowa Station Husafell |
genre |
Antarc* Antarctica Iceland |
genre_facet |
Antarc* Antarctica Iceland |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4040 http://id.nii.ac.jp/1291/00004040/ AA10756224 Proceedings of the NIPR Symposium on Upper Atmosphere Physics, 1, 110-120(1988-02) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4040&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250460036988928 |